Brand New black 2.4G wireless iPazzPort Mini PC keyboard with touchpad System require: -Windows 2000,XP,Vista,CE,windows 7 -Linux(Debian-3.1,Redhat-9.0 Ubuntu-8.10 Fedora-7.0 tested) Operating distance: less then 30 meter Model: DSSS model RF Transmitting power: Max +4dBm